Damper.



"No.ss'ssu Patenten sept. 2s, |399.

H. .1. n'nYEs. HARPER.

Appiimion med Supt. 1, 1898.

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UNITED STATES HORATIO J. NOYES, OF ASHTABULA, OHIO.r

PATENT OEEICE.

DAM PIER.. f

SPECIFICATION-formingpart of Letters Patent No. 633,890, dated. September 26, 1899. Application filed September 1,1898. Serial No. 690,057. (No model.) I

To all whom t may concern:

Be it known that I, HoRnrIo J. Norris, a citizen of the United States of America, and a resident of Ashtabula, in the-county of Ashtabula and State of Ohio, have invented certain new and useful Improvements inDarnpers, of which the following is a speci dcation.

Thisinvention relatesto dampers forsmokepipes, air-pipes, lues, e., in which dampers are usedfor regulating drafts; and it consists in the new constructions of a friction bearinghandle, in combination with the damper-disk and its journals, arranged to operate substantially as hereinafter described, and pointed out in the claim.

The object. of the invention is to provide a simple and easy means for adjusting and holding the damper in any and all desirable positions with certainty and despatch.

The invention is illustrated in the accompan ying drawings,` in Which- Figure l is a side elevation of a pipe having my improved damper attached. Fig. 2 is an end vievvr of the same. Fig. 3 is a grouping of the several parts, respectively, of the new friction bearing-handle.

A represents Va portion ofY pipe such as is used with stoves, hot-air furnaces, zc.

B is a plain metal disk damper provided with a flattened journal b on one side and 'a' pointed journal b on the opposite side.

C is a thickened portion on the damper adjoining the journal b, having two rounded projections c c, which bear against the inside surface of the pipe.

D D (seen separately in Fig. 3) are anglelevers, which are attached to the aforesaidjournal h by means of bolt E. At the angles of the said levers are provided projecticnsdA d, which bear against the outside of the pipe Y opposite to the aforesaid projections c c. The

outer ends of the levers are curved outward and are held apart by means of a spring F, held in place by the studs Z Z.

A From the foregoingtheoperations of this device are simple and as follows: The pressure of the spring causes a pressure of the projections d d against the pipe and grip it between them and the inside projections c c with sufficient force to hold the damper rmly i'n any` position. By pressure applied by the operator on the outer ends lof the levers the spring is compressed and the grip upon' the pipe is released. Then the damper is easily turned, and byrelinquishin g said pressure on new their grip on the pipe or fine.

In theinanufacture of this invention minor changes may be found desirable in the form and proportions of some of the parts. I would ne myself to the precise line of construction herein shown and described, but reserve to myself the right to make all such changes Without departing from the nature of the invention.

Having described my invention, what I claim, and desire to secure by Letters Patent,

In pipe-dempers, the gripping-handle consisting of the angle-levers D D having the grip bearing projections d d, in combination with the damper B, said levers pivoted onto the journal b of the damper, the pressurespring F between the outer ends of the levers adapted to operate for gripping the damper to the pipe, substantially as described and for the purpose specified.

Signed by me at Ashtabula,0hio, this 29th day of August, 1898. HORATIO J. NOYES.

Witnesses:

JAMES RALSTON, GEO. D. PARKER.

the levers the spring again causes them to renot therefore have it understood that I con- Y 

